Re^4: Generating Hash-of-List using map?

in reply to Re^3: Generating Hash-of-List using map?
in thread Generating Hash-of-List using map?

> So there is really no way around first declaring the hash and then filling it. What a pity!

O come on! Just "cheat"! ;-)

  DB<113> @CELLS = ("A-1", "B-2", "C-3", "A-4", "B-5", "C-6", "A-7", "
+B-8", "C-9")
 => ("A-1", "B-2", "C-3", "A-4", "B-5", "C-6", "A-7", "B-8", "C-9")

  DB<114> %hash = map { /^([^-]*)-(.*)$/; if( $1 eq ($a//'-') ) { push
+ @$b, $2; () } else { ( $a = $1 => $b = [ $2 ] ) } } sort @CELLS;
 => ("A", [1, 4, 7], "B", [2, 5, 8], "C", [3, 6, 9])
[download]

Cheers Rolf

( addicted to the Perl Programming Language)

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